<template>
  <div :class="className" :style="{ height: height, width: width }" />
</template>

<script>
import echarts from 'echarts';
require('echarts/theme/macarons'); // echarts theme
export default {
  props: {
    className: {
      type: String,
      default: 'chart'
    },
    defaultData: {
      type: Object,
      default: () => {}
    },
    width: {
      type: String,
      default: '100%'
    },
    height: {
      type: String,
      default: '350px'
    }
  },
  data() {
    return {
      chart: null
    };
  },
  watch: {
    defaultData: {
      handler() {
        this.initChart();
      },
      deep: true
    }
  },
  beforeDestroy() {
    if (!this.chart) {
      return;
    }
    this.chart.dispose();
    this.chart = null;
  },
  methods: {
    initChart() {
      this.chart = echarts.init(this.$el, 'macarons');
      this.chart.setOption(this.defaultData);
    }
  }
};
</script>
